Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The camera optical lens further satisfies specific conditions.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to acamera optical lens suitable for handheld devices such as smart phonesand digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but the photosensitivedevices of general camera lens are no other than Charge Coupled Device(CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor),and as the progress of the semiconductor manufacturing technology makesthe pixel size of the photosensitive devices shrink, coupled with thecurrent development trend of electronic products being that theirfunctions should be better and their shape should be thin and small,miniature camera lens with good imaging quality therefor has become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. And, with the development oftechnology and the increase of the diverse demands of users, and underthis circumstances that the pixel area of photosensitive devices isshrinking steadily and the requirement of the system for the imagingquality is improving constantly, the five-piece, six-piece andseven-piece lens structure gradually appear in lens design. There is anurgent need for ultra-thin wide-angle camera lenses which have goodoptical characteristics and the chromatic aberration of which is fullycorrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood withreference to the following drawings. The components in the drawing arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordancewith a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lensshown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG.1;

FIG. 4 presents a schematic diagram of the field curvature anddistortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordancewith a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lensshown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown inFIG. 5;

FIG. 8 presents the field curvature and distortion of the camera opticallens shown in FIG. 5;

FIG. 9 is a schematic diagram of the camera optical lens in the thirdembodiment of the present invention;

FIG. 10 is a schematic diagram of the longitudinal aberration of thecamera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of the lateral color of the cameraoptical lens shown in FIG. 9;

FIG. 12 is a schematic diagram of the field curvature and distortion ofthe camera optical lens shown in FIG. 9

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of thepresent invention, the camera optical lens 10 comprises 7 lenses.Specifically, from the object side to the image side, the camera opticallens 10 comprises in sequence: an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixthlens L6 and a seventh lens L7. Optical element like optical filter GFcan be arranged between the seventh lens L7 and the image surface Si.The first lens L1 is made of plastic material, the second lens L2 ismade of glass material, the third lens L3 is made of plastic material,the fourth lens L4 is made of plastic material, the fifth lens L5 ismade of plastic material, the sixth lens L6 is made of plastic material,the seventh lens L7 is made of plastic material;

Here, the focal length of the whole camera optical lens is defined as f,the focal length of the first lens is defined as f1, the curvatureradius of the object side surface of the first lens is defined as R1,the curvature radius of the image side surface of the first lens isdefined as R2, the refractive power of the second lens is defined as n2,the thickness on axis of the second lens is defined as d3, the focallength of the sixth lens is defined as f6, the focal length of theseventh lens is defined as f7, the total optical length of the cameraoptical lens is defined as TLL. The camera optical lens 10 satisfies thefollowing conditions: −3

f1/f

−1; 1.7

n2

2.2; 1

f6/f7

10; 1.2

(R1+R2)/(R1−R2)

10; 0.01

d3/TTL

0.2.

Condition −3

f1/f

−1 fixes the negative refractive power of the first lens L1. If theupper limit of the set value is exceeded, although it benefits the ultrathin development of lenses, but the negative refractive power of thefirst lens L1 will be too strong, problem like aberration is difficultto be corrected, and it is also unfavorable for wide-angle developmentof lens. On the contrary, if the lower limit of the set value isexceeded, the negative refractive power of the first lens becomes tooweak, it is then difficult to develop ultra thin lenses. Preferably, thefollowing condition shall be satisfied, −3

f1/f

−1.1.

Condition 1.7

n2

2.2 fixes the refractive power of the second lens L2, refractive powerwithin this range benefits the ultra thin development of lenses, and italso benefits the correction of aberration. Preferably, the followingcondition shall be satisfied, 1.7

n2

2.0.

Condition 1

f6/f7

10 fixes the ratio between the focal length f6 of the sixth lens L6 andthe focal length f7 of the seventh lens L7, a ratio within this rangecan effectively reduce the sensitivity of lens group used in camera andfurther enhance the imaging quality. Preferably, the condition 1.4

f6/f7

8.5 shall be satisfied.

Condition 1.2

(R1+R2)/(R1−R2)

10 fixes the shape of the first lens L1, when the value is beyond thisrange, with the development into the direction of ultra thin andwide-angle lenses, problem like aberration of the off-axis picture angleis difficult to be corrected. Preferably, the condition 1.2

(R1+R2)/(R1−R2)

7.5 shall be satisfied.

Condition 0.01

d3/TTL

0.2 fixes the ratio between the thickness on-axis of the second lens L2and the total optical length TTL of the camera optical lens 10, a ratiowithin this range benefits ultra thin development of lenses. Preferably,the following condition shall be satisfied, 0.05

d7/TTL

0.18.

When the focal length of the camera optical lens 10 of the presentinvention, the focal length of each lens, the refractive power of therelated lens, and the total optical length, the thickness on-axis andthe curvature radius of the camera optical lens satisfy the aboveconditions, the camera optical lens 10 has the advantage of highperformance and satisfies the design requirement of low TTL.

In this embodiment, the object side surface of the first lens L1 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the first lens L1 is f1, the thickness on axisof the first lens L1 is d1, they satisfy the condition: 0.1

d1

0.33, it is beneficial for ultra-thin development. Preferably, thecondition 0.16

d1

0.26 shall be satisfied.

In this embodiment, the object side surface of the second lens L2 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has positiverefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the second lens L2 is f2, the curvature radiusof the object side surface of the second lens L2 is R3, the curvatureradius of image side surface of the second lens L2 is R4 and thethickness on-axis of the second lens L2 is d3, they satisfy thefollowing condition: 0.38

f2/f

1.42, when the condition is met, the positive refractive power of thesecond lens L2 is controlled within reasonable scope, the sphericalaberration caused by the first lens L1 which has negative refractivepower and the field curvature of the system then can be reasonably andeffectively balanced; the condition −2.27

(R3+R4)/(R3−R4)

−0.53 fixes the shape of the second lens L2, when value is beyond thisrange, with the development into the direction of ultra thin andwide-angle lenses, problem like on-axis chromatic aberration isdifficult to be corrected; if the condition 0.26

d3

1.38 is met, it is beneficial for the realization of ultra-thin lenses.Preferably, the following conditions shall be satisfied, 0.6

f2/f

1.14; −1.42

(R3+R4)/(R3−R4)

−0.66; 0.42

d3

1.1.

In this embodiment, the object side surface of the third lens L3 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has positiverefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the third lens L3 is f3, the curvature radiusof the object side surface of the third lens L3 is R5, the curvatureradius of the image side surface of the third lens L3 is R6 and thethickness on-axis of the third lens L3 is d5, they satisfy thecondition: 1.29

f3/f

127.96, by meeting this condition, it is helpful for the system toobtain good ability in balancing the field curvature, so that the imagequality can be effectively improved; by meeting the condition −213.47

(R5+R6)/(R5−R6)

−0.61, the shape of the third lens L3 can be effectively controlled, itis beneficial for the shaping of the third lens L3 and bad shaping andstress generation due to extra large curvature of surface of the thirdlens 13 can be avoided; when the condition 0.15

d5

0.76 is met, it is beneficial for the realization of ultra-thin lenses.Preferably, the following conditions shall be satisfied, 2.06

f3/f

102.37; −133.42

(R5+R6)/(R5−R6)

−0.76; 0.24

d5

0.61.

In this embodiment, the object side surface of the fourth lens L4 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the fourth lens L4 is f4, the curvature radiusof the object side surface of the fourth lens L4 is R7, the curvatureradius of the image side surface of the fourth lens L4 is R8 and thethickness on-axis of the fourth lens L4 is d7, they satisfy thecondition: −4.01

f4/f

−1.17, the appropriate distribution of refractive power makes itpossible that the system has better imaging quality and lowersensitivity; the condition 0.03

(R7+R8)/(R7−R8)

2.24 fixes the shape of the fourth lens L4, when beyond this range, withthe development into the direction of ultra thin and wide-angle lens,the problem like chromatic aberration is difficult to be corrected; whenthe condition 0.1

d7

0.89 is met, it is beneficial for realization of ultra-thin lenses.Preferably, the following conditions shall be satisfied, −2.51

f4/f

−1.47; 0.05

(R7+R8)/(R7−R8)

1.79; 0.16

d7

0.72.

In this embodiment, the object side surface of the fifth lens L5 is aconcave surface relative to the proximal axis, its image side surface isa convex surface relative to the proximal axis, and it has positiverefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the fifth lens L5 is f5, the curvature radiusof the object side surface of the fifth lens L5 is R9, the curvatureradius of the image side surface of the fifth lens L5 is R10 and thethickness on-axis of the fifth lens L5 is d9, they satisfy thecondition: 0.26

f5/f

1.15, the limitation on the fifth lens L5 can effectively make the lightangle of the camera lens flat and the tolerance sensitivity reduces; thecondition 0.63

(R9+R10)/(R9−R10)

2.46 fixes the shape of the fifth lens L5, when beyond this range, withthe development into the direction of ultra thin and wide-angle lens,the problem like off-axis chromatic aberration is difficult to becorrected; when the condition 0.37

d9

1.53 is met, it is beneficial for the realization of ultra-thin lens.Preferably, the following conditions shall be satisfied, 0.42

f5/f

0.92; 1.01

(R9+R10)/(R9−R10)

1.97; 0.59

d9

1.22.

In this embodiment, the object side surface of the sixth lens L6 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the sixth lens L6 is f6, the curvature radiusof the object side surface of the sixth lens L6 is R11, the curvatureradius of the image side surface of the sixth lens L6 is R12 and thethickness on-axis of the sixth lens L6 is d11, they satisfy thecondition: −10.48

f6/f

−1.49, the appropriate distribution of refractive power makes itpossible that the system has better imaging quality and lowersensitivity; the condition 0.85

(R11+R12)/(R11−R12)

7.24 fixes the shape of the sixth lens L6, when beyond this range, withthe development into the direction of ultra thin and wide-angle lenses,the problem like off-axis chromatic aberration is difficult to becorrected; when the condition 0.15

d11

0.86, is met, it is beneficial for the realization of ultra-thin lens.Preferably, the following conditions shall be satisfied, −6.55

f6/f

−1.86; 1.36

(R11+R12)/(R11−R12)

5.79; 0.24

d11

0.69.

In this embodiment, the object side surface of the seventh lens L7 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens 10is f, the curvature radius of the object side surface of the seventhlens L7 is R13, the curvature radius of the image side surface of theseventh lens L7 is R14, the focal length of the seventh lens L7 is f7,and the thickness on-axis of the seventh lens L7 is d13, they satisfythe condition: 0.88

(R13+R14)/(R13−R14)

7.07, which fixes the shape of the seventh lens L7, when beyond thisrange, with the development into the direction of ultra thin andwide-angle lenses, the problem like off-axis chromatic aberration isdifficult to be corrected; By meeting the condition −3.08

f7/f

−0.52, appropriate distribution of refractive power makes it possiblethat the system has better imaging quality and lower sensitivity; bymeeting the condition 0.12

d13

0.84, it is beneficial for ultra-thin development. Preferably, thefollowing conditions shall be satisfied, −1.93

f7/f

−0.64; 1.42

(R13+R14)/(R13−R14)

5.65; 0.2

d13

0.67.

In this embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 6.66 mm, it is beneficial for therealization of ultra-thin lenses. Preferably, the total optical lengthTTL of the camera optical lens 10 is less than or equal to 6.35.

In this embodiment, the aperture F number of the camera optical lens 10is less than or equal to 2.11. A large aperture has better imagingperformance. Preferably, the aperture F number of the camera opticallens 10 is less than or equal to 2.07.

With such design, the total optical length TTL of the whole cameraoptical lens 10 can be made as short as possible, thus theminiaturization characteristics can be maintained.

In the following, an example will be used to describe the camera opticallens 10 of the present invention. The symbols recorded in each exampleare as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surfaceto the image surface of the first lens L1)

Preferably, inflexion points and/or arrest points can also be arrangedon the object side surface and/or image side surface of the lens, sothat the demand for high quality imaging can be satisfied, thedescription below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the following, the unitof the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd ν d S1 ∞ d0= −0.065 R1 3.824 d1= 0.220 nd1 1.6713 ν 119.24 R2 2.542 d2= 0.040 R3 2.709 d3= 0.552 nd2 1.7432 ν 2 49.30 R456.399 d4= 0.030 R5 7.783 d5= 0.295 nd3 1.6713 ν 3 19.24 R6 7.930 d6=0.503 R7 57.473 d7= 0.597 nd4 1.6713 ν 4 19.24 R8 4.601 d8= 0.142 R9−9.042 d9= 1.019 nd5 1.5352 ν 5 56.12 R10 −1.052 d10= 0.030 R11 7.765d11= 0.575 nd6 1.5352 ν 6 56.12 R12 4.479 d12= 0.105 R13 4.201 d13=0.244 nd7 1.5352 ν 7 56.12 R14 1.167 d14= 0.932 R15 ∞ d15= 0.210 ndg1.5168 ν g 64.17 R16 ∞ d16= 0.500

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvatureradius in case of lens;

R1: The curvature radius of the object side surface of the first lensL1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lensL2;

R4: The curvature radius of the image side surface of the second lensL2;

R5: The curvature radius of the object side surface of the third lensL3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lensL4;

R8: The curvature radius of the image side surface of the fourth lensL4;

R9: The curvature radius of the object side surface of the fifth lensL5;

R10: The curvature radius of the image side surface of the fifth lensL5;

R11: The curvature radius of the object side surface of the sixth lensL6;

R12: The curvature radius of the image side surface of the sixth lensL6;

R13: The curvature radius of the object side surface of the seventh lensL7;

R14: The curvature radius of the image side surface of the seventh lensL7;

R15: The curvature radius of the object side surface of the opticalfilter GF;

R16: The curvature radius of the image side surface of the opticalfilter GF;

d: The thickness on-axis of the lens and the distance on-axis betweenthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens 11;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lensL3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the seventh lens L7;

d13: The thickness on-axis of the seventh lens L7;

d14: The distance on-axis from the image side surface of the seventhlens L7 to the object side surface of the optical filter GF;

d15: The thickness on-axis of the optical filter GF;

d16: The distance on-axis from the image side surface to the imagesurface of the optical filter GF;

nd: The refractive power of the d line;

nd1: The refractive power of the d line of the first lens L1;

nd2: The refractive power of the d line of the second lens L2;

nd3: The refractive power of the d line of the third lens L3;

nd4: The refractive power of the d line of the fourth lens L4;

nd5: The refractive power of the d line of the fifth lens L5;

nd6: The refractive power of the d line of the sixth lens L6;

nd7: The refractive power of the d line of the seventh lens L7;

ndg: The refractive power of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the seventh lens L7;

vg: The abbe number of the optical filter GF;

Table 2 shows the aspherical surface data of the camera optical lens 10in the embodiment 1 of the present invention.

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −2.7844E+00 −3.5015E−02 −1.4582E−02   3.9886E−03 7.4101E−03−5.4936E−03  2.0137E−03  0.0000E+00 R2 −2.8653E+00 −4.9999E−02−2.1150E−02   9.8308E−03 7.7669E−03 4.8801E−03 5.8835E−04  0.0000E+00 R3−1.2068E+00 −3.9577E−02 −1.3565E−02  −6.9663E−03 4.9117E−03 4.9241E−03−9.9351E−04   0.0000E+00 R4  0.0000E+00 −5.3436E−02 −4.4158E−03 −7.1127E−04 −2.9879E−03  1.0855E−03 2.9726E−03 −2.6654E−03 R5−3.3982E+01  1.4882E−03 7.6697E−04  1.0080E−02 1.9275E−03 1.7105E−032.5308E−05 −7.5002E−04 R6  3.1436E+00 −2.0979E−02 5.6016E−03 −1.0021E−03−2.4024E−04  1.8696E−03 1.8336E−03  0.0000E+00 R7  0.0000E+00−1.5388E−01 4.2668E−03 −2.3447E−02 1.3403E−02 5.2516E−03 3.8753E−04−6.3397E−04 R8 −3.1452E+01 −7.4808E−02 9.3506E−03  2.4769E−03−1.1319E−03  5.6628E−04 8.8710E−05 −4.1541E−06 R9  2.4298E+01−2.4989E−02 2.4010E−02 −6.1848E−03 5.4751E−04 6.8948E−05 4.1157E−05 1.2476E−05 R10 −3.1262E+00 −7.8197E−02 2.7310E−02 −2.4969E−034.6783E−04 2.7614E−06 −8.1519E−06  −5.4594E−06 R11  8.5121E+00−2.3307E−02 1.0701E−03  3.6617E−04 −6.9817E−07  −1.2275E−06 −1.2048E−06  −8.0003E−08 R12 −8.9954E−01 −8.9011E−04 −2.5563E−04 −3.5935E−05 1.2177E−05 2.6372E−07 −5.8841E−08  −1.6647E−08 R13−1.9198E+00 −1.9137E−03 −1.8977E−04   2.0261E−05 2.5988E−06 2.5561E−07−3.0934E−09  −3.7511E−09 R14 −5.0677E+00 −1.3263E−02 2.1064E−03−1.8273E−04 7.4656E−06 7.4521E−08 −1.1261E−08   6.2278E−12

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 areaspheric surface indexes.

IH: Image Heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, the aspheric surface of each lens surface uses theaspheric surfaces shown in the above condition (1). However, the presentinvention is not limited to the aspherical polynomials form shown in thecondition (1).

Table 3 and table 4 show the inflexion points and the arrest pointdesign data of the camera optical lens 10 lens in embodiment 1 of thepresent invention. In which, R1 and R2 represent respectively the objectside surface and image side surface of the first lens L1, R3 and R4represent respectively the object side surface and image side surface ofthe second lens L2, R5 and R6 represent respectively the object sidesurface and image side surface of the third lens L3, R7 and R8 representrespectively the object side surface and image side surface of thefourth lens L4, R9 and R10 represent respectively the object sidesurface and image side surface of the fifth lens L5, R11 and R12represent respectively the object side surface and image side surface ofthe sixth lens L6, R13 and R14 represent respectively the object sidesurface and image side surface of the seventh lens L7. The data in thecolumn named “inflexion point position” are the vertical distances fromthe inflexion points arranged on each lens surface to the optic axis ofthe camera optical lens 10. The data in the column named “arrest pointposition” are the vertical distances from the arrest points arranged oneach lens surface to the optic axis of the camera optical lens 10.

TABLE 3 inflexion point inflexion point inflexion point inflexion pointnumber position 1 position 2 position 3 R1 1 0.675 R2 2 0.705 0.805 R3 30.725 1.005 R4 1 0.175 R5 0 R6 0 R7 2 0.105 1.125 R8 2 0.435 1.225 R9 11.085 R10 1 1.225 R11 3 0.775 1.565 1.965 R12 1 2.285 R13 0 R14 1 1.015

TABLE 4 arrest point number arrest point position 1 arrest pointposition 2 R1 0 R2 0 R3 0 R4 1 0.285 R5 0 R6 0 R7 1 0.165 R8 2 0.7851.415 R9 1 1.445 R10 0 R11 0 R12 0 R13 0 R14 0

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 10 in the first embodiment. FIG. 4shows the field curvature and distortion schematic diagrams after lightwith a wavelength of 555 nm passes the camera optical lens 10 in thefirst embodiment, the field curvature S in FIG. 4 is a field curvaturein the sagittal direction, T is a field curvature in the meridiandirection.

Table 13 shows the various values of the examples 1, 2, 3 and the valuescorresponding with the parameters which are already specified in theconditions.

As shown in Table 13, the first embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.952 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 74.00°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 5 and table 6 show the design data of the camera optical lens 20in embodiment 2 of the present invention.

TABLE 5 R d nd ν d S1 ∞ d0= −0.020 R1 6.565 d1= 0.200 nd1 1.6713 ν 119.24 R2 2.944 d2= 0.050 R3 2.673 d3= 0.525 nd2 1.8062 ν 2 40.91 R442.318 d4= 0.030 R5 5.916 d5= 0.317 nd3 1.6509 ν 3 21.52 R6 6.445 d6=0.543 R7 21.858 d7= 0.500 nd4 1.6713 ν 4 19.24 R8 4.335 d8= 0.189 R9−9.971 d9= 0.916 nd5 1.5352 ν 5 56.12 R10 −1.136 d10= 0.020 R11 13.512d11= 0.440 nd6 1.5352 ν 6 56.12 R12 3.512 d12= 0.100 R13 3.309 d13=0.557 nd7 1.5352 ν 7 56.12 R14 1.415 d14= 0.952 R15 ∞ d15= 0.210 ndg1.5168 ν g 64.17 R16 ∞ d16= 0.500

Table 6 shows the aspherical surface data of each lens of the cameraoptical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −1.0450E+01 −3.2566E−02 −1.1375E−02   6.7624E−03 8.3511E−03−6.3945E−03  1.4621E−03  1.3573E−04 R2 −3.1598E+00 −4.9699E−02−2.0408E−02   1.3599E−02 6.8198E−03 2.4902E−04 1.0773E−03 −4.8391E−05 R3−1.0310E+00 −3.8636E−02 −1.4371E−02  −1.2250E−02 1.5926E−03 5.2915E−03−1.4720E−03   2.5495E−04 R4  0.0000E+00 −5.0024E−02 −5.3928E−03 −5.5400E−03 −3.7101E−03  2.1990E−03 3.5926E−03 −2.4406E−03 R5−1.9266E+01 −3.2519E−03 6.0597E−04  1.0622E−02 −3.9204E−04  5.0964E−041.1940E−04 −3.2902E−04 R6 −1.3985E+01 −1.5506E−02 5.2699E−03 −2.2527E−03−1.8239E−04  4.8137E−04 5.5775E−04  1.3802E−04 R7  0.0000E+00−1.5993E−01 4.2269E−03 −1.9961E−02 1.3689E−02 5.1728E−03 5.7605E−04−1.2443E−03 R8 −2.7654E+01 −7.9765E−02 9.3213E−03  3.4528E−03−9.7608E−04  4.8410E−04 8.7838E−05  6.6611E−07 R9  3.3415E+01−1.8506E−02 2.4352E−02 −6.0112E−03 7.3523E−04 2.5337E−04 3.7551E−05−7.9744E−06 R10 −3.0494E+00 −7.5908E−02 2.7377E−02 −2.0732E−038.0172E−04 8.2657E−05 6.3599E−06 −3.6376E−06 R11  2.8088E+01 −1.7694E−028.3585E−04  3.7525E−04 1.5152E−05 9.1441E−06 −4.6896E−07  −8.1370E−07R12 −3.1668E+00 −2.6557E−03 −3.2219E−04  −2.3915E−05 2.4716E−051.4108E−06 −1.0829E−07  −9.1716E−08 R13 −2.7209E+00 −2.1544E−03−9.0267E−05   3.1660E−05 2.4057E−06 1.2627E−07 1.4088E−09 −3.9727E−09R14 −5.6315E+00 −1.0940E−02 2.1285E−03 −1.8949E−04 6.6629E−06 8.5616E−081.0269E−08  1.6791E−09

Table 7 and table 8 show the inflexion points and the arrest pointdesign data of the camera optical lens 20 lens in the second embodimentof the present invention.

TABLE 7 inflexion point inflexion point inflexion point inflexion pointnumber position 1 position 2 position 3 R1 1 0.565 R2 2 0.665 0.855 R3 10.6985 R4 1 0.205 R5 0 R6 0 R7 2 0.155 1.145 R8 2 0.435 1.205 R9 1 0.905R10 1 1.135 R11 3 0.645 1.415 1.915 R12 1 2.085 R13 0 R14 2 1.165 1.905

TABLE 8 arrest point number arrest point position 1 arrest pointposition 2 R1 0 R2 0 R3 0 R4 1 0.335 R5 0 R6 0 R7 1 0.265 R8 2 0.7851.395 R9 1 1.275 R10 0 R11 2 1.255 1.535 R12 0 R13 0 R14 0

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 20 in the second embodiment. FIG.8 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 20 inthe second embodiment.

As shown in Table 13, the second embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.963 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 74.33°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 3

Embodiment 3 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

The design information of the camera optical lens 30 in the thirdembodiment of the present invention is shown in the tables 9 and 10.

TABLE 9 R d nd ν d S1 ∞ d0= 0.000 R1 33.482 d1= 0.200 nd1 1.6713 ν 119.24 R2 3.042 d2= 0.060 R3 2.827 d3= 0.918 nd2 1.8610 ν 2 37.10 R4−24.840 d4= 0.045 R5 6.804 d5= 0.510 nd3 1.6355 ν 3 23.97 R6 −153.708d6= 0.672 R7 −10.132 d7= 0.200 nd4 1.6713 ν 4 19.24 R8 8.889 d8= 0.131R9 −5.427 d9= 0.734 nd5 1.5352 ν 5 56.12 R10 −1.313 d10= 0.035 R11 4.950d11= 0.296 nd6 1.5352 ν 6 56.12 R12 3.252 d12= 0.035 R13 1.376 d13=0.302 nd7 1.5352 ν 7 56.12 R14 0.894 d14= 1.139 R15 ∞ d15= 0.210 ndg1.5168 ν g 64.17 R16 ∞ d16= 0.500

Table 10 shows the aspherical surface data of each lens of the cameraoptical lens 30 in embodiment 3 of the present invention.

TABLE 10 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1  0.0000E+00 −1.6485E−02 −1.1634E−03  6.5901E−03  1.6869E−031.3534E−03 −1.5266E−04 −2.3654E−03 R2 −1.5795E+00 −4.8127E−02 1.4074E−02  6.9791E−03 −5.5023E−03 1.1242E−02 −3.4064E−03 −1.5257E−03R3 −1.6730E+00 −4.9841E−02 −1.4410E−03 −1.1885E−03 −6.0781E−031.4091E−03  2.4878E−03 −7.2953E−04 R4  0.0000E+00 −6.1609E−02 1.6008E−04 −1.5788E−03  2.5274E−04 −9.4489E−05   3.2837E−04 −1.0641E−04R5  1.3789E+01 −3.2909E−03 −6.8093E−03  2.9568E−03  7.5284E−041.4948E−04  2.1643E−04 −1.7122E−04 R6  0.0000E+00  5.3174E−02−2.4480E−02  2.2791E−03 −3.4505E−03 1.2693E−03  4.7329E−05 −9.7590E−05R7  0.0000E+00 −4.0885E−02 −1.0513E−02  3.0813E−04  7.1927E−03−3.7418E−03  −3.8181E−05  1.4100E−05 R8 −4.0212E+01 −2.5296E−02 1.4943E−03  3.5592E−03 −2.3350E−04 2.8552E−04  1.3052E−05 −1.1335E−05R9  0.0000E+00  4.4213E−02  5.2509E−03 −4.0168E−03  3.2384E−047.9913E−05  5.8906E−05 −1.7150E−05 R10 −5.0054E+00 −3.3599E−02 2.8963E−02 −9.7571E−04 −1.0543E−03 −6.9654E−05  −1.8870E−06  5.4816E−06R11  0.0000E+00 −3.1129E−03 −7.9633E−04 −8.8288E−05  8.4401E−061.6829E−05 −1.6748E−06 −1.2590E−07 R12 −3.5097E+00 −4.6817E−03−4.3812E−04 −1.1164E−04 −9.8339E−06 1.0676E−06  1.8534E−07 −8.1518E−08R13 −3.1547E+00 −2.3912E−02  8.1599E−04  6.0723E−05 −1.7058E−05−1.9461E−06  −3.8187E−07 −1.1307E−07 R14 −3.2938E+00 −1.8781E−02 6.8672E−04 −4.0678E−05  4.0798E−06 1.3997E−06 −3.8113E−08 −2.1621E−08

Table 11 and table 12 show the inflexion points and the arrest pointdesign data of the camera optical lens 30 lens in embodiment 3 of thepresent invention.

TABLE 11 inflexion point inflexion point inflexion point number position1 position 2 R1 2 0.395 0.795 R2 0 R3 1 0.705 R4 0 R5 0 R6 2 0.105 0.925R7 0 R8 2 0.585 0.985 R9 1 0.585 R10 2 0.895 1.535 R11 0 R12 1 1.335 R131 0.975 R14 1 0.925

TABLE 12 arrest point number arrest point position 1 arrest pointposition 2 R1 0 R2 0 R3 0 R4 0 R5 0 R6 2 0.175 1.165 R7 0 R8 0 R9 11.025 R10 0 R11 0 R12 1 2.045 R13 1 1.885 R14 1 2.295

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 455 nm and650 nm passes the camera optical lens 30 in the third embodiment. FIG.12 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 30 inthe third embodiment.

The following table 13, in accordance with the above conditions, liststhe values in this embodiment corresponding with each conditionexpression. Apparently, the camera optical system of this embodimentsatisfies the above conditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.928 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 73.97°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

TABLE 13 Embodiment 1 Embodiment 2 Embodiment 3 f 4.006 4.024 3.952 f1−12.018 −8.058 −4.952 f2 3.798 3.503 2.980 f3 341.733 88.639 10.189 f4−7.415 −8.074 −6.958 f5 2.123 2.304 3.035 f6 −20.991 −8.975 −18.789 f7−3.096 −5.129 −6.091 f6/f7 6.781 1.750 3.085 (R1 + R2)/(R1 − R2) 4.9642.626 1.200 (R3 + R4)/(R3 − R4) −1.101 −1.135 −0.796 (R5 + R6)/(R5 − R6)−106.733 −23.341 −0.915 (R7 + R8)/(R7 − R8) 1.174 1.495 0.065 (R9 +R10)/(R9 − R10) 1.263 1.257 1.638 (R11 + R12)/(R11 − R12) 3.726 1.7024.828 (R13 + R14)/(R13 − R14) 1.769 2.494 4.712 f1/f −3.000 −2.002−1.253 f2/f 0.948 0.871 0.754 f3/f 85.305 22.027 2.578 f4/f −1.851−2.006 −1.761 f5/f 0.530 0.573 0.768 f6/f −5.240 −2.230 −4.754 f7/f−0.773 −1.274 −1.541 d1 0.220 0.200 0.200 d3 0.552 0.525 0.918 d5 0.2950.317 0.510 d7 0.597 0.500 0.200 d9 1.019 0.916 0.734 d11 0.575 0.4400.296 d13 0.244 0.557 0.302 Fno 2.052 2.050 2.050 TTL 5.995 6.050 5.988d3/TTL 0.092 0.087 0.153 n1 1.6713 1.6713 1.6713 n2 1.7432 1.8062 1.8610n3 1.6713 1.6509 1.6355 n4 1.6713 1.6713 1.6713 n5 1.5352 1.5352 1.5352n6 1.5352 1.5352 1.5352 n7 1.5352 1.5352 1.5352

It is to be understood, however, that even though numerouscharacteristics and advantages of the present exemplary embodiments havebeen set forth in the foregoing description, together with details ofthe structures and functions of the embodiments, the disclosure isillustrative only, and changes may be made in detail, especially inmatters of shape, size, and arrangement of parts within the principlesof the invention to the full extent indicated by the broad generalmeaning of the terms where the appended claims are expressed.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side in sequence: a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens and a seventh lens,wherein the third lens has a positive refractive power and a convexobject side surface; the camera optical lens further satisfies thefollowing conditions: −3

f1/f

−1; 1.7

n2

2.2; 1

f6/f7

10; 1.2

(R1+R2)/(R1−R2)

10; 0.01

d3/TTL

0.2; 1.29

f3/f

127.96; −213.47

(R5+R6)/(R5−R6)

−0.61; 0.15 mm

d5

0.76 mm; where f: the focal length of the camera optical lens; f1: thefocal length of the first lens; f6: the focal length of the sixth lens;f7: the focal length of the seventh lens; n2: the refractive power ofthe second lens; R1: curvature radius of object side surface of thefirst lens; R2: the curvature radius of image side surface of the firstlens; d3: the thickness on-axis of the second lens; TTL: the totaloptical length of the camera optical lens; f3: the focal length of thethird lens; R5: the curvature radius of the object side surface of thethird lens; R6: the curvature radius of the image side surface of thethird lens; d5: the thickness on-axis of the third lens.
 2. The cameraoptical lens as described in claim 1, wherein the first lens is made ofplastic material, the second lens is made of glass material, the thirdlens is made of plastic material, the fourth lens is made of plasticmaterial, the fifth lens is made of plastic material, the sixth lens ismade of plastic material, the seventh lens is made of plastic material.3. The camera optical lens as described in claim 1, wherein first lenshas a negative refractive power with a convex object side surface and aconcave image side surface; the camera optical lens further satisfiesthe following conditions: 0.1 mm

d1

0.33 mm; where d1: the thickness on-axis of the first lens.
 4. Thecamera optical lens as described in claim 1, wherein the second lens hasa positive refractive power with a convex object side surface; thecamera optical lens further satisfies the following conditions: 0.38

f2/f5

1.42; −2.27 (R3+R4)/(R3−R4)

−0.53; 0.26 mm

d3

1.38 mm; where f: the focal length of the camera optical lens; f2: thefocal length of the second lens; R3: the curvature radius of the objectside surface of the second lens; R4: the curvature radius of the imageside surface of the second lens; d3: the thickness on-axis of the secondlens.
 5. The camera optical lens as described in claim 1, wherein thefourth lens has a negative refractive power and a concave object sidesurface; the camera optical lens further satisfies the followingconditions: −4.01

f4/f5

−1.17; 0.03

(R7+R8)/(R7−R8)

2.24; 0.10 mm

d7

0.89 mm; where f: the focal length of the camera optical lens; f4: thefocal length of the fourth lens; R7: the curvature radius of the objectside surface of the fourth lens; R8: the curvature radius of the imageside surface of the fourth lens; d7: the thickness on-axis of the fourthlens.
 6. The camera optical lens as described in claim 1, wherein thefifth lens has a positive refractive power with a concave object sidesurface and a convex image side surface; the camera optical lens furthersatisfies the following conditions: 0.26

f5/f

1.15; 0.63

(R9+R10)/(R9−R10)

2.46; 0.37 mm

d9

1.53 mm; where f: the focal length of the camera optical lens; f5: thefocal length of the fifth lens; R9: the curvature radius of the objectside surface of the fifth lens; R10: the curvature radius of the imageside surface of the fifth lens; d9: the thickness on-axis of the fifthlens.
 7. The camera optical lens as described in claim 1, wherein thesixth lens has a negative refractive power with a convex object sidesurface and a concave image side surface; the camera optical lensfurther satisfies the following conditions: −10.48

f6/f

−1.49; 0.85

(R11+R12)/(R11−R12)

7.24; 0.15 mm

d11

0.86 mm; where f: the focal length of the camera optical lens; f6: thefocal length of the sixth lens; R11: the curvature radius of the objectside surface of the sixth lens; R12: the curvature radius of the imageside surface of the sixth lens; d11: the thickness on-axis of the sixthlens.
 8. The camera optical lens as described in claim 1, wherein theseventh lens has a negative refractive power with a convex object sidesurface and a concave image side surface; the camera optical lensfurther satisfies the following conditions: 0.88

(R13+R14)/(R13−R14)

7.07; −3.08

f7/f

−0.52; 0.12 mm

d13

0.84 mm; where f: the focal length of the camera optical lens; f7: thefocal length of the seventh lens; d13: the thickness on-axis of theseventh lens; R13: the curvature radius of the object side surface ofthe seventh lens; R14: the curvature radius of the image side surface ofthe seventh lens.
 9. The camera optical lens as described in claim 1,wherein the total optical length TTL of the camera optical lens is lessthan or equal to 6.66 mm.
 10. The camera optical lens as described inclaim 1, wherein the aperture F number of the camera optical lens isless than or equal to 2.11.